package lianxi;
class Animal1{
    void shout(){
        System.out.println("动物发出叫声");
    }
}
class dog extends Animal{
    void shout(){
        System.out.println("汪汪汪······");
    }
}
public class example403 {
    public static void main(String[] args) {
        Dog dog = new Dog();
//        dog.shout();
    }
}
